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کلاسز. Dart

کلاسز. Dart

#class #dart

Dart

xxxxxxxxxx
 
import 'dart:math';
​
class Position {
  int x;
  int y;
​
  double distanceTo(Position other) {
    var dx = other.x - x;
    var dy = other.y - y;
    return sqrt(dx * dx + dy * dy);
  }
}
​
main() {
  var origin = new Position()
    ..x = 0
    ..y = 0;
​
  var p = new Position()
    ..x = -5
    ..y = 6;
​
  print(origin.distanceTo(p));
}

Output result

$ dart classes.dart
7.810249675906654

Dart

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